き゚

Japanese Wikipedia has an article on:

き゚

Wikipedia ^ja

Japanese Wikipedia has an article on:

鼻濁音

Wikipedia ^ja

The character き with a handakuten.

• IPA^(key): [ŋʲi]

き゚ • (ngi) 

1. (nonstandard, linguistics) The hiragana syllable き゚ (ngi). Its equivalent in katakana is キ゚ (ngi).

[ŋ] is an allophonic variation of /ɡ/ in Japanese; this phenomenon is known as 鼻(び)濁(だく)音(おん) (bidakuon, “nasal voiced sound”). This character is not used in standard Japanese, but instead for distinction between the two allophonic variations by Japanese linguists.